한국가스학회:학술대회논문집

The Korean Institute of GAS (한국가스학회)
권호 표지

Temperature Compensation of NDIR $CO_2$ Gas Sensor implemented with ASIC Chip

ASIC칩내장형비분산 적외선 이산화탄소 가스센서의 온도보상

  • Park, Jong-Seon (Department of Mechanical Engineering, Chungju National University) ;
  • Cho, Hee-Chan (Department of Mechanical Engineering, Chungju National University) ;
  • Yi, Seung-Hwan (Department of Mechanical Engineering, Chungju National University)
  • 박종선 (국립 충주대학교 기계공학과) ;
  • 조희찬 (국립 충주대학교 기계공학과) ;
  • 이승환 (국립 충주대학교 기계공학과)
  • Published : 2006.11.10
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Abstract

This paper describes NDIR $CO_2$ gas sensor that shows the characteristics of temperature compensation. It consists of novel optical cavity that has two elliptical mirrors and a thermopile detector that includes ASIC chip in the same metal package for the amplification of detector output voltage and temperature sensor. The newly developed sensor modules shows high accuracy (less than +/-40 ppm) throughout the measuring concentration of $CO_2$ gas from 0 ppm to 2,000 ppm. After implementing the calculation methods of gas concentration, which is based upon the experimental results, the sensor module shows high accuracy less than +/- 5 ppm error throughout the measuring temperature range $(15^{\circ}C\;to\; 35^{\circ}C)$ and gas concentrations.

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